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1 | /* |
1 | /* |
2 | * Copyright (c) 2001-2004 Jakub Jermar |
2 | * Copyright (c) 2001-2004 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup genarch |
29 | /** @addtogroup genarch |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** |
32 | /** |
33 | * @file |
33 | * @file |
34 | * @brief Headers for NS 16550 serial port / keyboard driver. |
34 | * @brief Headers for NS 16550 serial port / keyboard driver. |
35 | */ |
35 | */ |
36 | 36 | ||
37 | #ifndef KERN_NS16550_H_ |
37 | #ifndef KERN_NS16550_H_ |
38 | #define KERN_NS16550_H_ |
38 | #define KERN_NS16550_H_ |
39 | 39 | ||
40 | #include <console/chardev.h> |
40 | #include <console/chardev.h> |
41 | #include <ipc/irq.h> |
41 | #include <ipc/irq.h> |
42 | 42 | ||
43 | extern void ns16550_init(devno_t devno, inr_t inr, uintptr_t vaddr); |
43 | extern void ns16550_init(devno_t devno, inr_t inr, uintptr_t vaddr); |
44 | extern void ns16550_poll(void); |
44 | extern void ns16550_poll(void); |
45 | extern void ns16550_grab(void); |
45 | extern void ns16550_grab(void); |
46 | extern void ns16550_release(void); |
46 | extern void ns16550_release(void); |
47 | extern char ns16550_key_read(chardev_t *d); |
47 | extern char ns16550_key_read(chardev_t *d); |
48 | extern irq_ownership_t ns16550_claim(void); |
48 | extern irq_ownership_t ns16550_claim(void); |
49 | extern void ns16550_irq_handler(irq_t *irq, void *arg, ...); |
49 | extern void ns16550_irq_handler(irq_t *irq, void *arg, ...); |
50 | 50 | ||
- | 51 | #include <arch/types.h> |
|
- | 52 | #ifndef ia64 |
|
- | 53 | #include <arch/drivers/kbd.h> |
|
- | 54 | #endif |
|
- | 55 | /* NS16550 registers */ |
|
- | 56 | #define RBR_REG 0 /** Receiver Buffer Register. */ |
|
- | 57 | #define IER_REG 1 /** Interrupt Enable Register. */ |
|
- | 58 | #define IIR_REG 2 /** Interrupt Ident Register (read). */ |
|
- | 59 | #define FCR_REG 2 /** FIFO control register (write). */ |
|
- | 60 | #define LCR_REG 3 /** Line Control register. */ |
|
- | 61 | #define LSR_REG 5 /** Line Status Register. */ |
|
- | 62 | ||
- | 63 | #define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */ |
|
- | 64 | ||
- | 65 | #define LCR_DLAB 0x80 /** Divisor Latch Access bit. */ |
|
- | 66 | ||
- | 67 | /** Structure representing the ns16550 device. */ |
|
- | 68 | typedef struct { |
|
- | 69 | devno_t devno; |
|
- | 70 | volatile ioport_t io_port; /** Memory mapped registers of the ns16550. */ |
|
- | 71 | } ns16550_t; |
|
- | 72 | ||
- | 73 | static inline uint8_t ns16550_rbr_read(ns16550_t *dev) |
|
- | 74 | { |
|
- | 75 | return inb(dev->io_port+RBR_REG); |
|
- | 76 | } |
|
- | 77 | static inline void ns16550_rbr_write(ns16550_t *dev, uint8_t v) |
|
- | 78 | { |
|
- | 79 | outb(dev->io_port+RBR_REG,v); |
|
- | 80 | } |
|
- | 81 | ||
- | 82 | static inline uint8_t ns16550_ier_read(ns16550_t *dev) |
|
- | 83 | { |
|
- | 84 | return inb(dev->io_port+IER_REG); |
|
- | 85 | } |
|
- | 86 | ||
- | 87 | static inline void ns16550_ier_write(ns16550_t *dev, uint8_t v) |
|
- | 88 | { |
|
- | 89 | outb(dev->io_port+IER_REG,v); |
|
- | 90 | } |
|
- | 91 | ||
- | 92 | static inline uint8_t ns16550_iir_read(ns16550_t *dev) |
|
- | 93 | { |
|
- | 94 | return inb(dev->io_port+IIR_REG); |
|
- | 95 | } |
|
- | 96 | ||
- | 97 | static inline void ns16550_fcr_write(ns16550_t *dev, uint8_t v) |
|
- | 98 | { |
|
- | 99 | outb(dev->io_port+FCR_REG,v); |
|
- | 100 | } |
|
- | 101 | ||
- | 102 | static inline uint8_t ns16550_lcr_read(ns16550_t *dev) |
|
- | 103 | { |
|
- | 104 | return inb(dev->io_port+LCR_REG); |
|
- | 105 | } |
|
- | 106 | ||
- | 107 | static inline void ns16550_lcr_write(ns16550_t *dev, uint8_t v) |
|
- | 108 | { |
|
- | 109 | outb(dev->io_port+LCR_REG,v); |
|
- | 110 | } |
|
- | 111 | ||
- | 112 | static inline uint8_t ns16550_lsr_read(ns16550_t *dev) |
|
- | 113 | { |
|
- | 114 | return inb(dev->io_port+LSR_REG); |
|
- | 115 | } |
|
- | 116 | ||
- | 117 | ||
- | 118 | ||
51 | #endif |
119 | #endif |
52 | 120 | ||
53 | /** @} |
121 | /** @} |
54 | */ |
122 | */ |
55 | 123 |